john gilmore wrote:
SNs were useful when cataloged procedures and source programs were
maintained using such batch edit utilities as IEBUPDTE and IEBUPDAT.
Their current uses are exiguous; they are of only antiquarian interest;
and even that interest has, it seems to me, been exhausted.
That's an interesting statement; are there data to support your position
that this is the case for most installations? I find sequence numbers to
be handy when restricting searches, especially when using editors
outside of SPF's. They can also be useful to detect omissions in CUT and
PASTE operations, and they are extremely useful to disambiguate similar
stretches of code. And I still use Cornell's IEBUPDTX to maintain
versions of programs.
Gerhard Postpischil
Bradford, VT
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